<template>
 <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>用户管理</el-breadcrumb-item>
        <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区 -->
    <el-card >
    <!-- 搜索与添加区域 -->
        <el-row :gutter="20">
            <el-col :span="8">
                <el-input placeholder="请输入内容"
                v-model="queryInfo.query" clearable @clear="getUserList">
                    <el-button slot="append" icon="el-icon-search" 
                    @click="getUserList"></el-button>
                </el-input>
            </el-col>

            <el-col :span="4">
                <el-button type="primary" @click="addDialogVisible =true">添加用户</el-button>
            </el-col>               
        </el-row>
    <!-- 用户列表区域 -->
        <el-table :data="userlist" border stripe>
            <el-table-column type="index" label="序号" ></el-table-column>
            <el-table-column label="姓名" prop="username"></el-table-column>
            <el-table-column label="邮箱" prop="email"></el-table-column>
            <el-table-column label="电话" prop="mobile"></el-table-column>
            <el-table-column label="角色" prop="role_name"></el-table-column>
            <el-table-column label="状态" >
                <template slot-scope="scope">
                    <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
                </template>
            </el-table-column>
            <el-table-column label="操作" width="180px">
                <template slot-scope="scope" >
                    <!-- 修改按钮 -->
                    <el-button type="primary" icon="el-icon-edit" size="mini" 
                    @click="showEditDialog(scope.row.id)"></el-button>
                    <!-- 删除按钮 -->
                    <el-button type="danger" icon="el-icon-delete" size="mini"
                    @click="removeUserById(scope.row.id)"></el-button>
                    <!-- 分配角色按钮 -->
                    <el-tooltip  effect="dark" content="分配角色" placement="top" :enterable="false">
                            <el-button type="warning" icon="el-icon-setting" size="mini"
                            @click="setRole(scope.row)"></el-button>
                    </el-tooltip>                   
                </template>
            </el-table-column>
        </el-table>
    <!-- 分页区域 -->
        <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 10, 20, 50]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
        </el-pagination>
    </el-card>
    <!-- 添加用户的对话框 -->
    <el-dialog
        title="添加用户"
        :visible.sync="addDialogVisible"
        width="50%"
        @close="addDialogClosed">
        <!-- 内容主体区域 -->
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" 
        label-width="70px">
             <el-form-item label="用户名" prop="username">
                <el-input v-model="addForm.username"></el-input>
             </el-form-item>
             <el-form-item label="密码" prop="password">
                <el-input v-model="addForm.password"></el-input>
             </el-form-item>
             <el-form-item label="Email" prop="email">
                <el-input v-model="addForm.email"></el-input>
             </el-form-item>
             <el-form-item label="Phone" prop="mobile">
                <el-input v-model="addForm.mobile"></el-input>
             </el-form-item>
        </el-form>
        <!-- 底部区域 -->
        <span slot="footer" class="dialog-footer">
            <el-button @click="addDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="addUser">确 定</el-button>
        </span>
    </el-dialog>

    <!-- 修改用户的对话框 -->
    <el-dialog
        title="修改用户"
        :visible.sync="editDialogVisible"
        width="50%"
        @close="editDialogClosed">
        <el-form :model="editForm" :rules="editFormRules" 
        ref="editFormRef" label-width="70px">
            <el-form-item label="用户名" >
                <el-input v-model="editForm.username" disabled></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
                <el-input v-model="editForm.email" ></el-input>
            </el-form-item>
            <el-form-item label="Phone" prop="mobile">
                <el-input v-model="editForm.mobile"></el-input>
            </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
            <el-button @click="editDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="editUserInfo">确 定</el-button>
        </span>
    </el-dialog>
    <!-- 分配角色的对话框 -->
    <el-dialog
        title="分配角色"
        :visible.sync="setRoleDialogVisible"
        width="45%" @close="setRoleDialogClosed">
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>分配新角色：
            <el-select v-model="selectRoleId" placeholder="请选择角色">
                <el-option
                v-for="item in rolesList"
                :key="item.id"
                :label="item.roleName"
                :value="item.id">
                </el-option>
            </el-select>
        </p>
        <span slot="footer" class="dialog-footer">
            <el-button @click="setRoleDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
        </span>
    </el-dialog>

 </div>
</template>
<script>
 export default {
     data(){
         //验证邮箱的规则
    
         var checkEmail=(rule,value,cb)=>{
             const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
             if (regEmail.test(value)) {
                  return cb()
             }
            //返回一个错误提示
            cb(new Error('请输入合法的邮箱'))
         }
         //验证手机号的规则
         var checkMobile=(rule,value,cb)=>{
             const regMobile = /^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
            if (regMobile.test(value)) {
             return cb()
            }
            //返回一个错误提示
            cb(new Error('请输入合法的手机号码'))
         }
         
         return {
             //获取用户参数列表的参数对象
             queryInfo:{
                 query:'',
                 pagenum:1,//当前页数
                 pagesize:5
             },
             userlist:[],
             total:0,
              //控制添加对话框的显示与隐藏
             addDialogVisible:false,
             //添加用户的表单数据
             addForm:{
                 username:'',
                 password:'',
                 email:'',
                 mobile:''
             },
             //添加表单的验证规则
             addFormRules:{
                 username:[
                     {required:true, message:'请输入用户名', 
                     trigger:'blur'},
                     {
                        min:3,
                        max:10,
                        message:'用户名的长度在3~10个字符之间',
                        trigger:'blur'
                     }
                 ],
                 password:[
                     {required:true, message:'请输入密码', 
                     trigger:'blur'},
                     {
                        min:6,
                        max:15,
                        message:'密码的长度在6~15个字符之间',
                        trigger:'blur'
                     }
                 ],
                 email:[
                     {required:true, message:'请输入邮箱', 
                     trigger:'blur'},{validator:checkEmail,trigger:'blur'}
                 ],
                 mobile:[
                     {required:true, message:'请输入手机号码', 
                     trigger:'blur'},{validator:checkMobile,trigger:'blur'}
                 ]
             },
             //控制修改对话框的显示与隐藏
             editDialogVisible:false,
             editForm:{

             },
             //修改表单的验证规则对象
             editFormRules:{
                email:[
                    {required:true, message:'请输入邮箱', 
                    trigger:'blur'},{validator:checkEmail,trigger:'blur'}
                ],
                 mobile:[
                    {required:true, message:'请输入手机号码', 
                    trigger:'blur'},{validator:checkMobile,trigger:'blur'}
                 ]
             },
             //控制分配角色对话框的显示与隐藏
             setRoleDialogVisible:false,
             //需要被分配角色的用户信息
             userInfo:{},
             //所有角色的数据列表
             rolesList:{},
             //已选中的角色id值
             selectRoleId:[]
             
         }
     },
     created(){
        this.getUserList()
     },
     methods:{
         async getUserList(){
            const {data: res} = await this.$http.get('users', { params: this.queryInfo 
            })
            if(res.meta.status !==200){
                return this.$message.error('获取用户列表失败！')
            }
            this.userlist=res.data.users
            this.total=res.data.total
            
         },
         handleSizeChange(newSize){
             //监听pagesize改变的事件
             this.queryInfo.pagesize = newSize
             this.getUserList()
            
         },
         handleCurrentChange(newPage){
             //监听页码值改变的事件
             this.queryInfo.pagenum = newPage
             this.getUserList()
         },
         //监听switch
         async userStateChanged(userinfo){
           const {data:res}= await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
           if(res.meta.status !==200){
               userinfo.mg_state =!userinfo.mg_state
               return this.$message.error('更新用户状态失败！')
           }
           this.$message.success('更新用户状态成功！')
         },
         //监听添加用户对话框的关闭事件
         addDialogClosed(){
            this.$refs.addFormRef.resetFields()
         },
         //点击按钮添加新用户
         addUser(){
            this.$refs.addFormRef.validate(async valid=>{
                if(!valid) return
               const {data:res} =await this.$http.post('users',this.addForm)
               if(res.meta.status!==201){
                   this.$message.error('添加用户失败！')
               }
               this.$message.success('添加用户成功！')
               //隐藏添加用户的对话框
               this.addDialogVisible =false
               //重新获取用户列表数据
               this.getUserList()
            })
         },
         //展示编辑用户对话框
         async showEditDialog(id){
            const {data:res}=await this.$http.get('users/'+id)
            if(res.meta.status !==200){
                return this.$message.error('查询用户失败！')
            }
            this.editForm=res.data
            this.editDialogVisible=true
         },
         //监听修改用户对话框的关闭事件
         editDialogClosed(){
            this.$refs.editFormRef.resetFields()
         },
         //修改用户信息并提交
         editUserInfo(){
            this.$refs.editFormRef.validate(async valid=>{
                if(!valid) return
                //发起修改用户信息的数据请求
                const {data:res}=await this.$http.put('users/'+this.editForm.id,
                {
                    email:this.editForm.email,
                    mobile:this.editForm.mobile
                })
                if(res.meta.status !==200){
                    return this.$message.error('更新用户信息失败！')
                }
                //关闭对话框
                this.editDialogVisible=false
                //刷新数据列表
                this.getUserList()
                //提示修改成功
                this.$message.success('更新用户信息成功！')
            })
         },
         //根据id删除对应的用户信息
         async removeUserById(id){
             //弹框是否删除数据
            const confirmResult =await this.$confirm('此操作将永久删除该用户, 是否继续?', 
                '提示', 
                {
                    confirmButtonText: '确定',
                    cancelButtonText: '取消',
                    type: 'warning'
                }
            ).catch(err=>err)
            //用户确认删除，返回值未字符串confirm
            //用户取消删除，返回字符串cancel
            if(confirmResult!=='confirm'){
                return this.$message.info('已取消删除')
            }
            const {data:res} = await this.$http.delete('users/' +id)
            if(res.meta.status !==200){
                return this.$message.error('删除用户失败！')
            }
            this.$message.success('删除用户成功！')
            this.getUserList()

         },
         //展示分配角色的对话框
         async setRole(userInfo){
             this.userInfo=userInfo
             //在展示对话框之前，获取所有角色的列表
             const {data:res}=await this.$http.get('roles')
             if(res.meta.status!==200){
                 return  this.$message.error('获取角色列表失败')
             }

             this.rolesList=res.data
             this.setRoleDialogVisible=true
         },
         //点击按钮分配角色
         async saveRoleInfo(){
             if(!this.selectRoleId){
                return  this.$message.error('请选择要分配的角色')
             }
            const {data:res}=await this.$http.put(`users/${this.userInfo.id}/role`,{
                 rid:this.selectRoleId
             })
             if(res.meta.status!==200){
                 return  this.$message.error('更新角色失败')
             }
              this.$message.success('更新角色成功')
              this.getUserList()
              this.setRoleDialogVisible=false
         },
         //监听分配角色对话框的关闭事件
         setRoleDialogClosed(){
             this.selectRoleId='',
             this.userInfo={}
         }
     }
 }
 </script>
<style lang="less" scoped>
</style>